From one of the first days Jay freeman AKA Saurik came out with the cydia installer application, I've always been curious about the best cydia apps out there. Recently when the whole jailbreak memo became public to IOS 5, 5.01, people have more/less recognized how the iPhone should've been patented from the start. Out of curiosity what are your favorite applications to use? please make sure to list if the product is free or costs money also! Here is my 5 .. But before i start for all of you inexperienced jailbreakers/code makers who haven't jailbroken your iPhone here is some useful links to help you.
http://www.saurik.com/ : here is the owner of the whole cydia application (founder), do some reading on this.
http://www.redmondpie.com/jailbreak-5.0.1-untethered-on-iphone-ipad-ipod-touch-a4-devices-now-using-redsn0w-0.9.10b1-corona/ : If you would like to jailbreak your phone here is the directions for the 5.0.1 firmware unethered. MAKE SURE you have this software before you proceed, if you don't have it there is other methods for jailbreaking
1. Winterboard (free) - Used for the switching of full themes, sliders, and backgrounds. Just takes a theme download from cydia and a respring of your phone to switch your theme and end up with something like this.
2. MXtube (free) - Another useful application used to stream/download videos straight onto the program using 3G connection, must have wi-fi to download HD quality etc... after you download you can watch them straight on your phone without a wifi connection.
3. Activator (free) - One of my personal favorites. Basically this application just is an IOS shortcutting method for any application you wish. For instance when you open activator it will give you a list of things like at home screen, at lock screen etc and give you a list of what shortcut and how you want to access it. EX: double tap could be set for open message or triple click could be assigned to lock your phone. MANY POSSIBILITIES with this application
4. Gridlock (0.99$) - Another basic but useful application for the IPhone that should've been there from the start! Makes it so you can move your applications where ever you want to.
5.5. Icon Renamer (Free) - Lets you rename your icons on your springboard.
NOTE: There has been rumors that i've been hearing since i started being a jail breaker ( 3 years ago ) that you could void your warranty once you hack into the apple system, but over time i have jailbroken over 10 devices without any voided warranty problem. In the worst case scenario you could restore your iPhone and have it back to factory settings in no time. Just a helpful hint to make everyone aware to proceed with caution